我有下表：
sp0000001-mRNA-1
sp0000005-mRNA-1 GO:0003723
sp0000006-mRNA-1 GO:0016021
sp0000007-mRNA-1 GO:0003700|GO:0006355|GO:0043565
目标是为GO ID生成新行，这些行由|分隔。从上面的例子中，它将导致另外两行
sp0000001-mRNA-1
sp0000005-mRNA-1 GO:0003723
sp0000006-mRNA-1 GO:0016021
sp0000007-mRNA-1 GO:0003700
sp0000007-mRNA-1 GO:0006355
sp0000007-mRNA-1 GO:0043565
怎么可能这样做R？
提前谢谢